MSP430F5437AIPN datasheet(13/104 Pages) TI

13 / 104 page

MSP430F543xA, MSP430F541xA

www.ti.com

SLAS655B – JANUARY 2010 – REVISED OCTOBER 2010

Operating Modes

The MSP430 has one active mode and six software selectable low-power modes of operation. An interrupt event

can wake up the device from any of the low-power modes, service the request, and restore back to the

low-power mode on return from the interrupt program.

The following seven operating modes can be configured by software:

•

Active mode (AM)

–

All clocks are active

•

Low-power mode 0 (LPM0)

–

CPU is disabled

–

ACLK and SMCLK remain active, MCLK is disabled

–

FLL loop control remains active

•

Low-power mode 1 (LPM1)

–

CPU is disabled

–

FLL loop control is disabled

–

ACLK and SMCLK remain active, MCLK is disabled

•

Low-power mode 2 (LPM2)

–

CPU is disabled

–

MCLK and FLL loop control and DCOCLK are disabled

–

DCO's dc-generator remains enabled

–

ACLK remains active

•

Low-power mode 3 (LPM3)

–

CPU is disabled

–

MCLK, FLL loop control, and DCOCLK are disabled

–

DCO's dc generator is disabled

–

ACLK remains active

•

Low-power mode 4 (LPM4)

–

CPU is disabled

–

ACLK is disabled

–

MCLK, FLL loop control, and DCOCLK are disabled

–

DCO's dc generator is disabled

–

Crystal oscillator is stopped

–

Complete data retention

•

Low-power mode 4.5 (LPM4.5)

–

Internal regulator disabled

–

No data retention

–

Wakeup from RST, digital I/O

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